l4_sched_cpu_set_t Struct Reference

CPU sets. More...

#include <scheduler.h>

Collaboration diagram for l4_sched_cpu_set_t:

Public Member Functions
unsigned char	granularity () const
unsigned	offset () const
void	set (unsigned char granularity, unsigned offset)
	Set offset and granularity.

Data Fields
l4_umword_t	gran_offset
	Combination of granularity and offset.
l4_umword_t	map
	Bitmap of CPUs.

Detailed Description

CPU sets.

Examples

examples/sys/migrate/thread_migrate.cc.

Definition at line 69 of file scheduler.h.

Member Function Documentation

granularity()

unsigned char l4_sched_cpu_set_t::granularity ( ) const

inline

Returns

Get granularity value

Definition at line 92 of file scheduler.h.

References gran_offset.

Referenced by set().

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offset()

unsigned l4_sched_cpu_set_t::offset ( ) const

inline

Returns

Get offset value

Definition at line 94 of file scheduler.h.

References gran_offset.

Referenced by set().

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set()

void l4_sched_cpu_set_t::set ( unsigned char  granularity, unsigned  offset  )

inline

Set offset and granularity.

Parameters

granularity	Granularity in log2 notation.
offset	Offset. Must be a multiple of 2^granularity.

Definition at line 101 of file scheduler.h.

References gran_offset, granularity(), and offset().

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Field Documentation

gran_offset

l4_umword_t l4_sched_cpu_set_t::gran_offset

Combination of granularity and offset.

The granularity defines how many CPUs each bit in map describes. And the offset is the number of the first CPU described by the first bit in the bitmap.

Precondition

offset must be a multiple of 2^granularity.

MSB	LSB
8bit granularity	24bit offset ..

Definition at line 83 of file scheduler.h.

Referenced by granularity(), L4::Scheduler::info(), l4_sched_cpu_set(), offset(), and set().

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The documentation for this struct was generated from the following file:

• l4/sys/scheduler.h